某同学在做提取叶绿体中色素的实验时,收集到的色素提取液为淡绿

某同学在做提取叶绿体中色素的实验时,收集到的色素提取液为淡绿色。分析产生该结果的可能原因是                                                                                  (    )

  ①研磨不充分,色素未能充分提取出来   ②无水乙醇加入量太多,稀释了色素提取液

  ③无水乙醇加得太少,色素未提取出来   ④未加CaCO3粉末,叶绿素分子已被破坏

  A.①②④            B.①③④                   C.③④            D.①②

答案

A

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